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Electrostatics/microstrip.pro

@@ -16,8 +16,8 @@
        Run (button at the bottom of the left panel)
    ------------------------------------------------------------------- */
 
-/* In this first tutorial we consider the solution of electric fields given a
-   static distribution of electric potentials. This corresponds to a so-called
+/* In this first tutorial we consider the calculation of the electric field
+   given a static distribution of electric potential. This corresponds to an
    "electrostatic" physical model, obtained by combining the time-invariant
    Maxwell-Ampere equation (Curl e = 0, with e the electric field) with Gauss'
    law (Div d = rho, with d the displacement field and rho the charge density)
@@ -31,10 +31,12 @@
 
    We consider here the special case where rho = 0, to model a conducting
    microstrip line on top of a dielectric substrate. A Dirichlet boundary
-   condition sets the potential to 1 mV on the boundary of the line (called
-   "Electrode" below) and 0 V on the ground. A homogeneous Neumann boundary
-   condition (zero flux of the displacement field, i.e. n.d = 0) is imposed on a
-   surface truncating the modelling domain. */
+   condition sets the potential to 1 mV on the boundary of the microstrip line
+   (called "Electrode" below) and 0 V on the ground. A homogeneous Neumann
+   boundary condition (zero flux of the displacement field, i.e. n.d = 0) is
+   imposed on the left boundary of the domain to account for the symmetry of the
+   problem, as well as on the top and right boundaries that truncate the
+   modelling domain. */
 
 Group {
   /* One starts by giving explicit meaningful names to the Physical regions